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TI-2023-04367 Aliases CVE-2023-4739GHSA-3pj2-53jv-g287

Byzoro Smart S85F Management Platform updateos.php unrestricted upload

Priority HIGH 75CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-434.

Summary

A vulnerability, which was classified as critical, has been found in Byzoro Smart S85F Management Platform up to 20230820. Affected by this issue is some unknown functionality of the file /sysmanage/updateos.php. The manipulation of the argument 1_file_upload leads to unrestricted upload. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-238628. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.03586 89th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ByzoroSmart S85F Management Platform20230820—No fix listedCNA
  • Smart S85F Management Platform VendorByzoro Affected 20230820 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:byzoro:smart_s85f_firmware:*:*:*:*:*:*:*:*up to 20230820VulnerableByzoro
cpe:2.3:h:byzoro:smart_s85f:-:*:*:*:*:*:*:*not specified by NVDRunning onByzoro
  • cpe:2.3:o:byzoro:smart_s85f_firmware:*:*:*:*:*:*:*:* Versions up to 20230820 Vulnerable ·Byzoro
  • cpe:2.3:h:byzoro:smart_s85f:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Byzoro

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-4739
  2. 2026-10-03 Alias added: GHSA-3pj2-53jv-g287

References

Exploit 1

  • TI-2023-05227 Byzoro Smart S85F Management Platform importexport.php os command injection CVSS 3.1CRITICAL 9.8
  • TI-2023-05226 Byzoro Smart S85F Management Platform importconf.php os command injection CVSS 3.1CRITICAL 9.8
  • TI-2023-05490 Byzoro Smart S85F Management Platform login.php password recovery CVSS 3.1MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences